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/* ColorModel.java -- Java class for interpreting Pixel objects
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the non-peer AWT libraries of GNU Classpath.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA. */
package java.awt.image;
/**
*
* @author C. Brian Jones (cbj@gnu.org)
*/
public abstract class ColorModel
{
protected int pixel_bits;
/**
* Constructs the default color model. The default color model
* can be obtained by calling <code>getRGBdefault</code> of this
* class.
* @param b the number of bits wide used for bit size of pixel values
*/
public ColorModel(int b) {
pixel_bits = b;
}
/**
* Returns the default color model which in Sun's case is an instance
* of <code>DirectColorModel</code>.
*/
public static ColorModel getRGBdefault() {
return new DirectColorModel(32, 0xff0000, 0xff00, 0xff, -0x1000000);
}
/**
* Get get number of bits wide used for the bit size of pixel values
*/
public int getPixelSize() {
return pixel_bits;
}
/**
* Get the red component of the given pixel.
*/
public abstract int getRed(int pixel);
/**
* Get the green component of the given pixel.
*/
public abstract int getGreen(int pixel);
/**
* Get the blue component of the given pixel.
*/
public abstract int getBlue(int pixel);
/**
* Get the alpha component of the given pixel.
*/
public abstract int getAlpha(int pixel);
/**
* Get the RGB color value of the given pixel using the default
* RGB color model.
*
* @param pixel a pixel value
*/
public int getRGB(int pixel) {
ColorModel cm = getRGBdefault();
return (cm.getRGB(pixel));
}
/**
* FIXME - What else should be done here?
*/
public void finalize() {
try {
super.finalize();
} catch ( Throwable t ) { }
}
}
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